Punching and reinforcing device



Jan. 29, 1952 B. HxRszsoN Erm.

` PUNCHING AND REINFORCLLNG DEVICE Filed Dec. 20, 1947 fare/ Patented Jan. 29, 1952 PUNCHING AND REINFORCING DEVICE Beniamin Hirszson and Joseph Anthony Paparelli, Rio de Janeiro, Brazil Application December 20, 1947, Serial No. 792,924

`In Brazil November 20, 1947 p The purpose of the invention submitted is to apply a permanently adhesive material in the form of a reinforcing ring or surface of any shape to al sheetA of paper or any other similar material. The applied reinforcing agent and sheet of paper or any other similar material are subsequently perforated, the result being a reinforced hole.

The device is supplied with rolls of the permanently adhesive reinforcing strips. The said strips are-allowed to move under vertical cylinders' containing the cutting, applying and perforating mechanism. The complete chain of action is imparted through a lever whichcoordinates the successive movements in predetermined sequence so that the advance of the said permanently adhesive reinforcing tape, the cutting, application and perforating a-re performed in one downward stroke of said lever. The said strip is received on a metering receiving roll after having been punched and the required rings or applying surfaces removed.

The application of the invention may be for the reinforcing of one, two or more holes simultaneously. The above mentioned system of reinforcing may be executed by a hand lever or electrically energized.

Figure 1 is a top view of the device. Figure 2 is a side elevational view of the same device. Figure 3 is an enlarged vertical section of the cutting, applying and perforating mechanism. Figure 4 is a rear View of the device with rolls omitted. Figure 5 is an enlarged side view of thel slip gear and handle as they become disengaged.

On the base I are iixed by upstanding walls 35;.bored cylinders 3 containing the three operational parts of the cutting, application, and perforating mechanism. Between the two vertical cylinders 3 fixed to the base I, a handle 20 is journalled ona pin 2I carried on two bars 23 and 23 pivoted at their lower ends on a pin 22 extending between the columns 35. On the rear end of the handle 20, a movable latch I8 is supported by latch springs and pins I9.

On two rigid vertical bars 25 and 25, is fixed a shaft Il, on which the gear I6 is placed, being positioned directly below a slot 34 in the handle 20, so that the latch I8. with the handle 20 in its normal elevated position, engages the said gear I6.

A spring 24 on the upper pivot pin 2I keeps the handle 20 in an elevated normal position. Within the cylinders 3 are the two cylindrical cutters 4 supported by springs 6, which rest on the shoulders Il in the lower part of the cylinders 3.

2 Claims. (Cl. 93-1) Sliding in the cutters 4|-, the appliers 5 are held downward by springs 1 against the lower parts of slots I4 with the retaining rings 9. The perforating plungers 2 are held in elevated p0 sition by springs 8. 'Springs 8 have greater compression strength than springs 6.

Protruding forward from the supporting walls 35 for the cylinders 3, are two horizontal bars 26. Through bars 26 is shaft 2l on which are xed the supplying rolls 28 of tape 30.

Unwinding the tape 30 leaving the supplying rolls passes under two position rollers I5 and between the lower ends of cylinders 3 and cutting plates I3. The tape 3|! is then wound on metering receiving rolls 29 attached to and rotatable with the shaft I1.

The action is begun and completed by one downward motion of the handle 20. As the handle 20 begins its downward motion, the latch I8, which in a normal position has engaged a tooth on the gear I E, rotates the gear in a clockwise direction. The metering receiving rolls 29 attached to the same shaft I'I.as the gear I6, are also rotated in the same direction causing the tape to be wound on it.

The tape 30 is unwound from the supplying rolls 28, passing under the positioning rollers l5 and between the cylinders 3 and the cutting plates I3, to the metering receiving rolls 29. A constant pressure is maintained on the tape 3u by pressure retaining yspring 31 which is attached to the base I and engages over the gear teeth to prevent backlash. This also permits the handle 2U to return to its normal position without the metering receiving rolls 29 moving counterclockwise.

-As the handle 2u continues its downward motion there approaches the point where the latch I8 commences to move away from the gear I6 and finally completely disengages, leaving the next tooth on gear I6 in a position to be engaged with the la'h I8 as the handle 20 returns to its normal position after full execution of the reinforcing perforation operation.

During the above mentioned period when the handle 20 is operating the gear IB for purposes of feeding the tape 30, the handle pin I0 is allowed to move freely in plunger slots I2 without giving any motion to plungers 2.

The gear mechanism is so constructed that as the pin I0 reaches the bottom of the slots I2, the latch I8 is disengaged from the gear I6 and the tape 3U has been moved in to position ready to be cut and applied.

Continuing on the same downward motion, the plungers 2 under force of pin I0 are pushed down. Through'springs 8 this motion is relayed to cutters 4 which are held up by springs 5.

Since springs 8 are of greater compression strength than springs 6, the cutters descend with the plunger. Descending the cutters encounter the tape 30 and press it against and through the cutting plates I3 and cut the required reinforcing rings or surfaces of any' other shape.

The reinforcing rings or surfaces of any other shape are then in a position ready for the action of the appliers 5, since the cutters l have Ybeen stopped by the shoulders il in'the cylinders 3, after having cut. The cutters 4 having stoppedy make possible the continued downward move ment oi' the plungers 2 to which the appliers 5 are attached.

The appliers 5 are slightly ahead or the plungers 2 so that they rst encounter the reinm forcing rings in the cutters 4. The appliers 5, continuing downward? press the reinforcingsurfaces against the sheet of paper or -any other similar material, inserted beneath the cutting plates I3 then stop their downward motion and the plungers 2 continue downward.

The applier springs 'l are always kept under tension in the downward motion by the retaining rings 9 at the same time allowing the movement of the plungers 2 to continue Von to perincluding selectively actuable mechanism to impart incremental rotation to a rewind spool, said means including anV actuating lever forked at one endrmovable in an arc, a shaft carrying said spool, a gear secured on said shaft, a dog carried by said lever and bridging at the fork engageable with the gear'when the lever is moved in one direction to rotate the shaft a predetermined distance, and a spring finger associated with said gear to prevent backlash of the shaft.

2. In a device for severing and attaching a reinforcing piece to a sheet and perforating the attached piece and sheet, a cylindrical body, a cutting ring in said body, a spring normally holding the cutting ring in an elevated position, a plunger slidable in the body and through the cutting ring, a spring normally holding the plunger elevated and affording a compressible connection between the'cutting ring and plunger whereby initial downward movement of the plunger carries the cutting ring downwardly to Y sever the piece from a supply strip, and an atforate the applied reinforcing rings or other l surfaces of any shape, on a sheet of paper or any other similar material.

The actual construction of the device may be varied within the scope of Vthe invention, that is to say that should the invention apply to any so arranged that only one roll of the permanently adhesive material be used to feed two or more of the cutting, applying and perforating cylinders instead of a separate roll-for each cylinder, it would still conform with the basic idea as explained.

` Having explained the essential principles of the device, lwe claim:

1. In a machine of th character described taching ring telescoped on and resiliently connected to the plunger within the Ycutting ring, said attaching ring engaging the severing piece and pressing it against the sheet prior to perorating descent of the plunger.

BENIAMIN HIRSZSON.

JOSEPH ANTHONY PAPARELLI.

REFERENCES CITED The following references are of record in the die of this patent;

UNITED sTATEs PATENTS Great Britain Sept. 1935 

